This whole 30tooth rear thing has got me down. The cush drive on my new wheel is bigger than the 34tooth XS sprocket I have now. I don't want to run a jack shaft with gear reduction so it looks like I will have to have a new cush drive made...
Swim,
Why don't you try the European supermoto sites, the Yammie WR is very popular over here with the clubbie racer lads. So i would be surprised if you didn't find anything to suit your set up.
Leslie